问题:
It was not until Susan came back ______her close friends were waiting for him.
A.which she knew
B.which did she know
C.that she knew
D.that did she know
It was not until Susan came back ______her close friends were waiting for him.
A.which she knew | B.which did she know |
C.that she knew | D.that did she know |
参考答案: